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Knot impingement after arthroscopic rotator cuff repair mimicking infection: A case report

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Author(s)
Du-Han KimJong-Hyuk JeonByung-Chan ChoiChul-Hyun Cho
Keimyung Author(s)
Kim, Du HanCho, Chul Hyun
Department
Dept. of Orthopedic Surgery (정형외과학)
Journal Title
World J Clin Cases
Issued Date
2022
Volume
10
Issue
15
Keyword
Rotator cuffKnot impingementShoulderInfectionArthroscopyCase report
Abstract
BACKGROUND:
Knot impingement as a complication after arthroscopic rotator cuff repair (ARCR) has been suggested as a cause of persistent pain with limited motion. We report on a case involving a patient who developed knot impingement after ARCR who complained of acute onset of pain with limited motion, which was confused with infection.

CASE SUMMARY:
A 55-year-old female who complained of severe pain with limited motion of the right shoulder visited our emergency room. Passive range of motion could not be evaluated due to the patient’s severe pain. The patient had undergone ARCR using a suture-bridge technique at a local clinic four months ago for treatment of a small supraspinatus tear of the right shoulder. An erosive change of the undersurface of the acromion was observed on plain radiographs of the right shoulder, and a moderate amount of bursal fluid and synovial thickening with enhancement was observed by magnetic resonance imaging. Results of an analysis of the aspirated fluid showed that the WBC count was 3960 with 90% neutrophils. The arthroscopic view showed healing of the repaired supraspinatus tendon and loose suture threads and knots with severe subacromial bursitis were observed. Debridement of inflammatory tissues of the glenohumeral joint and subacromial space was performed for the removal of all suture materials. The patient’s symptoms subsided immediately after the surgical procedure.

CONCLUSION:
Although the incidence of knot impingement is rare, the possibility of knot impingement after ARCR should be a consideration.
Keimyung Author(s)(Kor)
김두한
조철현
Publisher
School of Medicine (의과대학)
Citation
Du-Han Kim et al. (2022). Knot impingement after arthroscopic rotator cuff repair mimicking infection: A case report. World J Clin Cases, 10(15), 5097–5102. doi: 10.12998/wjcc.v10.i15.5097
Type
Article
ISSN
2307-8960
Source
https://www.wjgnet.com/2307-8960/full/v10/i15/5097.htm#
DOI
10.12998/wjcc.v10.i15.5097
URI
https://kumel.medlib.dsmc.or.kr/handle/2015.oak/44353
Appears in Collections:
1. School of Medicine (의과대학) > Dept. of Orthopedic Surgery (정형외과학)
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